Question

2. Give scientific reasons.
a. All the mass of an atom is concentrated in the nucleus


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Answer 1

Answer:

According to science,

the mass of an electron is 1/2000th times the mass of an proton. Also neutron has slightly heavier than proton. Therefore electron's mass is concided to be a negligible mass or an electron has mass which is atmost 0. Since nucleus is made up of protons and neutrons, the mass of an atom is concentrated in the nucleua

Answer 2

Answer:

All the mass of an atom is concentrated in the nucleus because atom contains three subatomic particles like electron, proton and neutron. ... So, charge on negatively charged electrons are balanced by charge on positively charged proton.

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